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Old 19-08-2018, 02:56 PM   #1
benvvc
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Default Gearbox help!!!

Hi guys/gals I've changed my pg1 box over the weekend from a c4bp to a c6bp with torsen diff. Put everything back together and now it's stuck in gear. Operating the lever in the car fella like I can get thru all 5 and reverse and when I put it in the middle it's slack and moves side to side free and easy. But wen I try and start it. It lurches forward. Have jacked it up and wen I start it both wheels start spinning and increase in velocity if I rev it. Any help with this greatly appreciated
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Old 19-08-2018, 03:10 PM   #2
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Itís a gearbox out job, Iím guessing it will be one of the selector forks is under or over one of the selector rings instead of being in the middle of it.


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Old 19-08-2018, 03:20 PM   #3
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Gearbox out and then taken apart?
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Old 19-08-2018, 03:22 PM   #4
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Casing off, then check the selector forks are all in the correct place, they are supposed to be sat in the middles of the rings they move.


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Old 19-08-2018, 03:24 PM   #5
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I have no idea what your on about. It's took me all week to change it on my drive lol. Only had a small amount of time each day
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Old 19-08-2018, 03:24 PM   #6
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Iíll find you a piccy


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Old 19-08-2018, 03:26 PM   #7
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I love it
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Old 19-08-2018, 03:27 PM   #8
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Thanks very much. So it's definitely got to come out? It's nothing to do with the rod that sticks out of the box that the selector rod bolts too?
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Old 19-08-2018, 03:28 PM   #9
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I'm not sure what I'm looking at in that picture lol
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Old 19-08-2018, 03:33 PM   #10
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The gold coloured forks are connected to a ring which selects the gears, itís possible when the forks are put back in that they go under or on top of the ring instead of around the middle of it.
The other possibility is in the bottom left of the pic, if they are not aligned properly when the final interlocking bit goes in, Iíll try to find some better pics.


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Old 19-08-2018, 03:34 PM   #11
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Is that how it should look? And if I take mine apart it will be different?
Cheers for your help
Il start taking it apart again tomorrow weather permitting
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Old 19-08-2018, 03:36 PM   #12
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That pic is how it should look
Thereís a final part that interlocks the bits circled which you need to make sure is aligned.



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I love it
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Old 19-08-2018, 04:31 PM   #13
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Nice1 Mr custard. Il try and get the box out tomorrow b4 work. And take the casing off. Is anything likely to spring out as I don't want the internals projecting everywhere lol

And do you know the torque settings for putting the box back together? Much appreciation to you sir
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Old 20-08-2018, 02:19 PM   #14
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Can I just add that in the picture Dan has posted there that the selector isn't fitted. The three notched bars in the picture have a location on the selector mechanism. It's quite easy to get all the bits in the box, but quite tricky to get them all lined up.

I am sure even if you've not done this before, it will be quite obvious once it's in bits.

I was trying to post the link to the Rovertech forum that shows how to strip the box but currently it's unavailable.

A few tips, you need a 14mm Allen key to get the box open. The cap this is used for can be very tight so do this with the box attached to the car. Just crack it loose and you'll be fine. With the box on the floor, remove the bolts around the edge. Then remove the bolt on top (14mm) and the reverse gear shaft, 19mm reverse switch and then the 14mm Allen key cap. Split the box but it will open only about 10mm. Inside the cap there is a circlip. Hold this open and then pry open the box. Once it's past the circlip it will come open easily. At this point, keep the box upright as if you tip it over, the gears will fall off the shaft.

You will need some sealer to build it back up.
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Last edited by AGoaty; 21-08-2018 at 02:10 PM.
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Old 20-08-2018, 02:41 PM   #15
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Quote:
Originally Posted by InstantCustard View Post
Thereís a final part that interlocks the bits circled which you need to make sure is aligned.

I did clarify there was a bit missing.




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couldnt be bothered to stretch that far to pull it out.
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Haz obviously don't like custard , my Mrs spits it out to!
I love it
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